Do Chihuahuas have behavior problems?

Chihuahuas can be aggressive, but they are so small no one takes them seriously. I had a Toy Chihuahua for many years, and she was one feisty girl. She loved to pee inside, steal things, and pick fights with every single dog she saw bigger than her. Chihuahuas often get away with a lot of bad behavior due to their cuteness and tiny size. As they say, they pack a big dog personality into a pint-size pup. They actually are known to be biters, but again, they are so small and don’t do much damage that they don’t make the list of the most aggressive breeds or breeds that are likely to bite.